OASIS high-resolution integral field spectroscopy of the SAURON ellipticals and lenticulars

Conference item

We present a summary of high-spatial resolution follow-up observations of the elliptical (E) and lenticular (SO) galaxies in the SAURON survey using the OASIS integral field spectrograph. The OASIS observations explore the central 8" x 10" regions of these galaxies using a spatial sampling four times higher than SAURON, often revealing previously undiscovered features. Around 75% (31/48) of the SAURON E/SOs with central velocity dispersion greater than or similar to 120 kin s(-1) were observed with OASIS, covering well the original SAURON representative sample. We present here an overview of this follow-up survey, and some preliminary results on individual objects, including a previously unreported counter-rotating core in NGC4382; the decoupled stellar and gas velocity fields of NGC 2768; and the strong age gradient towards the centre of NGC 3489.

Authors: McDermid, R; Emsellem, E; Cappellari, M; Kuntschner, H; Bacon, R

• Publication status: Published
• Journal: ASTRONOMISCHE NACHRICHTEN
• Volume: 325
• Issue: 2
• Pages: 100-103
• Publication date: 2004-01-01
• Event title: 1st Euro3D Science Conference
• DOI: 10.1002/asna.200310184
• EISSN: 1521-3994
• ISSN: 0004-6337
• Keywords: galaxies : stellar content; galaxies : individual (NGC 2768, NGC 3489, NGC 4382); galaxies : elliptical and lenticular; galaxies : kinematics and dynamics